211211021221122 has 48 divisors (see below), whose sum is σ = 458156940046560. Its totient is φ = 64882677315456.

The previous prime is 211211021221111. The next prime is 211211021221133. The reversal of 211211021221122 is 221122120112112.

It is an interprime number because it is at equal distance from previous prime (211211021221111) and next prime (211211021221133).

It is a super-2 number, since 2×211211021221122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168170872 + ... + 169422147.

It is an arithmetic number, because the mean of its divisors is an integer number (9544936250970).

Almost surely, 2^{211211021221122} is an apocalyptic number.

211211021221122 is an abundant number, since it is smaller than the sum of its proper divisors (246945918825438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211021221122 is a wasteful number, since it uses less digits than its factorization.

211211021221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337593667 (or 337593654 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211211021221122 its reverse (221122120112112), we get a palindrome (432333141333234).

The spelling of 211211021221122 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".